Set of headphones



FIG. 1 is a perspective view of a set of headphones as seen from the front, top and right side;

FIG. 2 is a front view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The dotted line portions of the drawings represent environmental structure only and do not form part of the claimed design. The cord is shown with a symbolic break in its length. The appearance of any portion of the article between the break lines forms no part of the claimed design. 

CLAIM The ornamental design for set of headphones, substantially as shown and described. 